1. State Key Laboratory of Military Stomatology; Department of Orthodontics; School of Stomatology; Fourth Military Medical University; Xi'an China
2. Department of Stomatology; PLA Second Artillery General Hospital; Beijing China
3. State Key Laboratory of Military Stomatology; Department of Oral and Maxillofacial Surgery; School of Stomatology; Fourth Military Medical University; Xi'an China
4. Department of Stomatology; No. 263 Clinical Section of the General Hospital of Beijing Military Region; Beijing China
5. Department of Neurology; PLA Second Artillery General Hospital; Beijing China